Which of the following is a homogeneous mixture? tap water
chicken noodle soup
soil and water
applesauce

Water and applesauce are examples of a Homogeneous Mixture

Chicken Noodle Soup and Soil with Water would be examples of a Heterogeneous Mixture.

Explanation:

Homogeneous Mixtures are mixtures that are the same throughout, i.e. it's just one substance. A good example of this is a glass of water, this is because it is all one solution without any other visible different parts that will settle if left alone for a while. The same applies to the applesauce, it is one type of a mixture with nothing else added to it.

Hetergeneous Mixtures on the other hand are different substances added together. The noodles, soup and chicken, three different substances in one mixture. The soil and water mixture also applies, two substances which separate if left alone.  

See http://chemistry.elmhurst.edu/vchembook/106Amixture.html#:~:text=A%20homogeneous%20mixture%20has%20the,gas%2C%20liquid%2C%20and%20solid. For more information.

the answer for sodium is 0.186

the answer for rubidium is 0.251